portability fix for test-ssh

The __del__ method of sshrepo reads the stderr of the remote process
until EOF and prints it.

If an exception is raised, this method ends up being called:
- on Linux: after the "abort: ..." message is printed
- on OS X: before the "abort: ..." message is printed

This patch explicitly flushes the stderr of the remote process before
raising a RepoError.

mercurial/sshrepo.py

@@ -1,207 +1,211
 # sshrepo.py - ssh repository proxy class for mercurial
 #
 # Copyright 2005, 2006 Matt Mackall <[e-mail]>
 #
 # This software may be used and distributed according to the terms
 # of the GNU General Public License, incorporated herein by reference.
 
 from node import *
 from remoterepo import *
 from i18n import gettext as _
 from demandload import *
 demandload(globals(), "hg os re stat util")
 
 class sshrepository(remoterepository):
     def __init__(self, ui, path, create=0):
         self._url = path
         self.ui = ui
 
         m = re.match(r'ssh://(([^@]+)@)?([^:/]+)(:(\d+))?(/(.*))?', path)
         if not m:
-            raise hg.RepoError(_("couldn't parse location %s") % path)
+            self.repoerror(_("couldn't parse location %s") % path)
 
         self.user = m.group(2)
         self.host = m.group(3)
         self.port = m.group(5)
         self.path = m.group(7) or "."
 
         args = self.user and ("%s@%s" % (self.user, self.host)) or self.host
         args = self.port and ("%s -p %s") % (args, self.port) or args
 
         sshcmd = self.ui.config("ui", "ssh", "ssh")
         remotecmd = self.ui.config("ui", "remotecmd", "hg")
 
         if create:
             cmd = '%s %s "%s init %s"'
             cmd = cmd % (sshcmd, args, remotecmd, self.path)
 
             ui.note('running %s\n' % cmd)
             res = os.system(cmd)
             if res != 0:
-                raise hg.RepoError(_("could not create remote repo"))
+                self.repoerror(_("could not create remote repo"))
 
         self.validate_repo(ui, sshcmd, args, remotecmd)
 
     def url(self):
         return self._url
 
     def validate_repo(self, ui, sshcmd, args, remotecmd):
         # cleanup up previous run
         self.cleanup()
 
         cmd = '%s %s "%s -R %s serve --stdio"'
         cmd = cmd % (sshcmd, args, remotecmd, self.path)
 
         ui.note('running %s\n' % cmd)
         self.pipeo, self.pipei, self.pipee = os.popen3(cmd, 'b')
 
         # skip any noise generated by remote shell
         self.do_cmd("hello")
         r = self.do_cmd("between", pairs=("%s-%s" % ("0"*40, "0"*40)))
         lines = ["", "dummy"]
         max_noise = 500
         while lines[-1] and max_noise:
             l = r.readline()
             self.readerr()
             if lines[-1] == "1\n" and l == "\n":
                 break
             if l:
                 ui.debug(_("remote: "), l)
             lines.append(l)
             max_noise -= 1
         else:
-            raise hg.RepoError(_("no suitable response from remote hg"))
+            self.repoerror(_("no suitable response from remote hg"))
 
         self.capabilities = ()
         lines.reverse()
         for l in lines:
             if l.startswith("capabilities:"):
                 self.capabilities = l[:-1].split(":")[1].split()
                 break
 
     def readerr(self):
         while 1:
             size = util.fstat(self.pipee).st_size
             if size == 0: break
             l = self.pipee.readline()
             if not l: break
             self.ui.status(_("remote: "), l)
 
+    def repoerror(self, msg):
+        self.cleanup()
+        raise hg.RepoError(msg)
+
     def cleanup(self):
         try:
             self.pipeo.close()
             self.pipei.close()
             # read the error descriptor until EOF
             for l in self.pipee:
                 self.ui.status(_("remote: "), l)
             self.pipee.close()
         except:
             pass
 
     __del__ = cleanup
 
     def do_cmd(self, cmd, **args):
         self.ui.debug(_("sending %s command\n") % cmd)
         self.pipeo.write("%s\n" % cmd)
         for k, v in args.items():
             self.pipeo.write("%s %d\n" % (k, len(v)))
             self.pipeo.write(v)
         self.pipeo.flush()
 
         return self.pipei
 
     def call(self, cmd, **args):
         r = self.do_cmd(cmd, **args)
         l = r.readline()
         self.readerr()
         try:
             l = int(l)
         except:
-            raise hg.RepoError(_("unexpected response '%s'") % l)
+            self.repoerror(_("unexpected response '%s'") % l)
         return r.read(l)
 
     def lock(self):
         self.call("lock")
         return remotelock(self)
 
     def unlock(self):
         self.call("unlock")
 
     def heads(self):
         d = self.call("heads")
         try:
             return map(bin, d[:-1].split(" "))
         except:
-            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
+            self.repoerror(_("unexpected response '%s'") % (d[:400] + "..."))
 
     def branches(self, nodes):
         n = " ".join(map(hex, nodes))
         d = self.call("branches", nodes=n)
         try:
             br = [ tuple(map(bin, b.split(" "))) for b in d.splitlines() ]
             return br
         except:
-            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
+            self.repoerror(_("unexpected response '%s'") % (d[:400] + "..."))
 
     def between(self, pairs):
         n = "\n".join(["-".join(map(hex, p)) for p in pairs])
         d = self.call("between", pairs=n)
         try:
             p = [ l and map(bin, l.split(" ")) or [] for l in d.splitlines() ]
             return p
         except:
-            raise hg.RepoError(_("unexpected response '%s'") % (d[:400] + "..."))
+            self.repoerror(_("unexpected response '%s'") % (d[:400] + "..."))
 
     def changegroup(self, nodes, kind):
         n = " ".join(map(hex, nodes))
         return self.do_cmd("changegroup", roots=n)
 
     def unbundle(self, cg, heads, source):
         d = self.call("unbundle", heads=' '.join(map(hex, heads)))
         if d:
-            raise hg.RepoError(_("push refused: %s") % d)
+            self.repoerror(_("push refused: %s") % d)
 
         while 1:
             d = cg.read(4096)
             if not d: break
             self.pipeo.write(str(len(d)) + '\n')
             self.pipeo.write(d)
             self.readerr()
 
         self.pipeo.write('0\n')
         self.pipeo.flush()
 
         self.readerr()
         d = self.pipei.readline()
         if d != '\n':
             return 1
 
         l = int(self.pipei.readline())
         r = self.pipei.read(l)
         if not r:
             return 1
         return int(r)
 
     def addchangegroup(self, cg, source, url):
         d = self.call("addchangegroup")
         if d:
-            raise hg.RepoError(_("push refused: %s") % d)
+            self.repoerror(_("push refused: %s") % d)
         while 1:
             d = cg.read(4096)
             if not d: break
             self.pipeo.write(d)
             self.readerr()
 
         self.pipeo.flush()
 
         self.readerr()
         l = int(self.pipei.readline())
         r = self.pipei.read(l)
         if not r:
             return 1
         return int(r)
 
     def stream_out(self):
         return self.do_cmd('stream_out')
 
 instance = sshrepository

tests/test-ssh.out

@@ -1,93 +1,93
 # creating 'remote'
 # repo not found error
+remote: abort: repository nonexistent not found!
 abort: no suitable response from remote hg!
-remote: abort: repository nonexistent not found!
 # clone remote via stream
 streaming all changes
 XXX files to transfer, XXX bytes of data
 transferred XXX bytes in XXX seconds (XXX XB/sec)
 XXX files updated, XXX files merged, XXX files removed, XXX files unresolved
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions
 # clone remote via pull
 requesting all changes
 adding changesets
 adding manifests
 adding file changes
 added 1 changesets with 1 changes to 1 files
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # verify
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 1 changesets, 1 total revisions
 # empty default pull
 default = ssh://user@dummy/remote
 pulling from ssh://user@dummy/remote
 searching for changes
 no changes found
 # local change
 # updating rc
 # find outgoing
 searching for changes
 changeset:   1:c54836a570be
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     add
 
 # find incoming on the remote side
 searching for changes
 changeset:   1:c54836a570be
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     add
 
 # push
 pushing to ssh://user@dummy/remote
 searching for changes
 remote: adding changesets
 remote: adding manifests
 remote: adding file changes
 remote: added 1 changesets with 1 changes to 1 files
 # check remote tip
 changeset:   1:c54836a570be
 tag:         tip
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     add
 
 checking changesets
 checking manifests
 crosschecking files in changesets and manifests
 checking files
 1 files, 2 changesets, 2 total revisions
 bleah
 # push should fail
 pushing to ssh://user@dummy/remote
 searching for changes
 abort: unsynced remote changes!
 (did you forget to sync? use push -f to force)
 # push should succeed
 pushing to ssh://user@dummy/remote
 searching for changes
 remote: adding changesets
 remote: adding manifests
 remote: adding file changes
 remote: added 1 changesets with 1 changes to 1 files
 Got arguments 1:user@dummy 2:hg -R nonexistent serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R local serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 changegroup in remote: u=remote:ssh:127.0.0.1
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 Got arguments 1:user@dummy 2:hg -R remote serve --stdio 3: 4: 5:
 changegroup in remote: u=remote:ssh:127.0.0.1